Keystone Virtual Field

virtual.ts

import { list, graphql } from '@keystone-6/core';
import {
  text,
  virtual,
} from '@keystone-6/core/fields';

export const Producer = list({
  fields: {
    firstName: text({ validation: { isRequired: true }, isFilterable: true }),
    middleName: text({ isFilterable: true }),
    lastName: text({ isFilterable: true }),
    fullName: virtual({
      field: graphql.field({
        type: graphql.String,
        resolve: (item: any) =>
          `${item.firstName} ${item.middleName} ${item.lastName}`,
      }),
    }),
    orgName: virtual({
      field: graphql.field({
        type: graphql.String,
        async resolve(item, args, context) {
          const { org } = await context.query.Producer.findOne({
            where: { id: item.id.toString() },
            query: 'org { orgName }',
          });
          return org && org.orgName;
        },
      }),
    }),  
  },
});